Siward Biornsson Earl Northumberland 
Siward Biornsson Earl was born about 1012 in Of, Denmark.1 Siward Biornsson Earl's father was Biorn (Bjorn) Ulsiusson (Estri. His paternal grandparents were Ulf Thorgilsson and Estrid Svendsdatter. He was an only child. He died in 1055 in York, Yorkshire, England.1 -
Ancestor Pedigree Chart
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- b.~ 0936 d.WFT Est. 970-1027
- b.~ 0967 in Of, Halland, SWEDEN d.22 Sep 1027
- b.~ 0990 in Of Denmark d.BET. 1045 - 1049
- b.~ 0965 in Of, Denmark d.3 FEB 1013/14 in Gainsborough, Lincolnshire, England
- b.~ 0967 in Of, Denmark d.09 May
- b.~ 0970 in Of, Poznan, Poznan, POLAND d.AFT. 2 FEB 1013/14
- b.~ 1012 in Of, Denmark d.1055 in York, Yorkshire, England
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